president obama's sunshine state swing comes today as three new polls show the race is razor tight and declining confidence in the economy remains a president's biggest challenge. new polls of "the new york times" and cbs news and fox news and npr show it's margin of error race. 47% to 46%. 47% to 45%. the president's job rating underwater in two of the polls and the npr poll that shows him doing better than the other two still has him under 50%. why is obama facing such a tough environment? voters feeling the sluggish economy and "the